NSK 1201-2RS Bearing — Specifications, Dimensions & Cross-Reference

The NSK 1201-2RS is a self-aligning ball bearing double rubber sealed manufactured by NSK. It belongs to the 1200 series and features dimensions of 12 × 32 × 10 mm (bore × OD × width). This bearing has a dynamic load rating of 5,530 N and a static load rating of 1,630 N, making it suitable for light-duty applications.

Technical Specifications

Dimensions
Bore Diameter (d)	12 mm
Outside Diameter (D)	32 mm
Width (B)	10 mm
Weight	0.034 kg

Performance
Dynamic Load Rating (Cr)	5,530 N
Static Load Rating (C₀r)	1,630 N
Limiting Speed (Grease)	18,000 rpm
Limiting Speed (Oil)	24,000 rpm

💡 Application Note: The 1200 series bearings are commonly used in conveyor rollers, textile machinery, and applications with shaft misalignment. The -2RS suffix indicates double rubber contact seals, providing excellent protection against dust, moisture, and contaminants — ideal for harsh operating environments.

Brand Cross-Reference — 1201-2RS Equivalents

The following bearings from other manufacturers are interchangeable with the NSK 1201-2RS. All share identical dimensions (12×32×10mm) and comparable load ratings:

Brand	Part Number	Dynamic Load (N)	Static Load (N)
NSK	NSK 1201-2RS ✦	5,530	1,630
Timken	Timken 1201-2RS	5,530	1,630
SKF	SKF 1201-2RS	5,530	1,630
NACHI	NACHI 1201-2RS	5,530	1,630
KOYO	KOYO 1201-2RS	5,530	1,630
Timken	Timken 1201-2RS	5,530	1,630
FAG	FAG 1201-2RS	5,530	1,630
NTN	NTN 1201-2RS	5,530	1,630
SKF	SKF 1201-2RS	5,530	1,630

Available Variants

The NSK 1201 base bearing is available in these configurations:

NSK 1201-NR

Open with snap ring

NSK 1201-ZZ-C3

Double shielded, C3 clearance

NSK 1201-2RS-C3

Double sealed, C3 clearance

NSK 1201-C3

Open, C3 clearance

NSK 1201-2Z

Double metal shielded (ISO)

NSK 1201-ZZ

Double metal shielded

NSK 1201

Open (no seal/shield)

Frequently Asked Questions

What are the dimensions of the NSK 1201-2RS?

The NSK 1201-2RS has a bore diameter of 12mm, outside diameter of 32mm, and width of 10mm. It weighs 0.034kg.

What is the load capacity of the NSK 1201-2RS?

The dynamic load rating (Cr) is 5,530 N and the static load rating (C₀r) is 1,630 N. The maximum recommended speed is 18,000 rpm with grease lubrication or 24,000 rpm with oil lubrication.

What bearings are equivalent to NSK 1201-2RS?

The 1201-2RS is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 12×32×10mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.